4. Let C be the binary repetition code of length 3. As discussed in class, C is a linear code. Determine, with justification, its dual code C (list its codewords). (Remark: Do you recognize this code? Do you see how the computation generalizes?) 4. Let C be the binary repetition code of length 3. As discussed in class, C is a linear code. Determine, with justification, its dual code C (list its codewords). (Remark: Do you recognize this code? Do you see how the computation generalizes?)